attachLibrarian   Description Syntax Examples Argument Types How do I contact the AIS team?

The attachLibrarian function attaches the specified librarian Lambda {anLambda} to the specified ObjectRepository {aGor}. Once the attachLibrarian function returns, the ObjectRepository is no longer a simple associative memory. The database schema and the entire behavior of the ObjectRepository is now completely determined by the attached librarian Lambda. Furthermore, multiple librarian Lambdas may interact, controlling multiple ObjectRepositories, thus creating very large object databases and/or distributed object databases.

(attachLibrarian aGor anLambda)

Here are a number of links to Lambda coding examples which contain this instruction in various use cases.

Example_ObjectRepository_attachLibrarian_001

Once the librarian Lambda is attached to the ObjectRepository, all new function calls originally meant to open the ObjectRepository will return the librarian Lambda, not the ObjectRepository. When the new function creates the ObjectRepository, the ObjectRepository itself will be stored in the Lambda's persistent variable named: myOR. Whenever the ObjectRepository is open, the ObjectRepository index (always a Directory object) will be stored in the Lambda's persistent variable named: myIndex. The librarian Lambda may change the number and/or meaning of all remaining arguments. Each librarian Lambda must have the following form:

Here are the links to the data types of the function arguments.

Here are also a number of links to functions having arguments with any of these data types.

How do I contact the AIS team? You can always talk with the AIS at aiserver.sourceforge.net.